stepic-0.4.1/ 0000775 0001750 0001750 00000000000 13226327214 014471 5 ustar kitterma kitterma 0000000 0000000 stepic-0.4.1/setup.py 0000755 0001750 0001750 00000001771 13226327205 016212 0 ustar kitterma kitterma 0000000 0000000 #!/usr/bin/python3
from distutils.core import setup
import os
import stepic
if os.environ.get('RELEASE') != '0':
version = stepic.__version__
else:
version = stepic.__version__ + '~bzr'
setup(name='stepic',
version=version,
description='Python image steganography',
author='Lenny Domnitser',
author_email='lenny@domnit.org',
maintainer="Scott Kitterman",
maintainer_email="scott@kitterman.com",
url='https://launchpad.net/stepic',
license='GPL',
py_modules=['stepic'],
scripts=['stepic'],
data_files=[('share/doc/stepic', ['COPYING', 'TODO']),
('share/man/man1', ['stepic.1'])],
classifiers=[
'License :: OSI Approved :: GNU General Public License v2 or later (GPLv2+)',
'Environment :: Console',
'Topic :: Multimedia :: Graphics',
'Topic :: Utilities',
'Development Status :: 6 - Mature',
'Programming Language :: Python :: 3 :: Only'
]
)
stepic-0.4.1/doc/ 0000775 0001750 0001750 00000000000 13226327214 015236 5 ustar kitterma kitterma 0000000 0000000 stepic-0.4.1/doc/index.html 0000664 0001750 0001750 00000003542 13226324506 017240 0 ustar kitterma kitterma 0000000 0000000
Stepic - Python image steganography
Stepic
Python image steganography
Stepic is now maintained at https://launchpad.net/stepic.
Download
The latest release can be found at https://launchpad.net/stepic/+download.
If you are using Debian or Ubuntu, you can install the python-stepic package. Use the command: sudo apt install python-stepic.
Graphical User Interface
Rizzy is a graphical steganography tool built on Stepic. It supports AES encryption in addition to plain steganography.
There is also an online utility built on Stepic.
Documentation
Source code
Source code is managed as a bzr branch. It can be checked out using the command:
bzr branch lp:stepic
or can be browsed here.
License
Stepic is © 2007 Lenny Domnitser and © 2018 Scott Kitterman and is release under the GNU GPL 2.
stepic-0.4.1/doc/help.txt 0000664 0001750 0001750 00000001450 13226322445 016730 0 ustar kitterma kitterma 0000000 0000000 Usage: stepic [options]
Hide data in an image, or read hidden data from an image
Options:
--version show program's version number and exit
-h, --help show this help message and exit
--debug
-d, --decode given an image, write out the hidden data file
-e, --encode given an image and data file, write out a new image
file with the data hidden in it
-f FORMAT, --format=FORMAT
output image format (optional)
-i FILE, --image-in==FILE
read in image FILE for decoding or encoding
-t FILE, --data-in==FILE
read in data FILE for encoding
-o FILE, --out==FILE write out to FILE, data when decoding, image when
encoding
stepic-0.4.1/doc/pydoc/ 0000775 0001750 0001750 00000000000 13226327214 016354 5 ustar kitterma kitterma 0000000 0000000 stepic-0.4.1/doc/pydoc/stepic.html 0000664 0001750 0001750 00000012426 13226322503 020532 0 ustar kitterma kitterma 0000000 0000000
Python: module stepic
Python image steganography
Stepic hides arbitrary data inside PIL images.
Stepic uses the Python Image Library
(apt: python3-pil, web: <http://www.pythonware.com/products/pil/>).
Functions |
| | |
- decode(image)
- extracts data from an image
- decode_imdata(imdata)
- Given a sequence of pixels, returns an iterator of characters
encoded in the image
- encode(image, data)
- generates an image with hidden data, starting with an existing
image and arbitrary data
- encode_imdata(imdata, data)
- given a sequence of pixels, returns an iterator of pixels with
encoded data
- encode_inplace(image, data)
- hides data in an image
|
Data |
| | |
__all__ = ('encode_imdata', 'encode_inplace', 'encode', 'decode_imdata', 'decode', 'Steganographer')
__author__ = 'Lenny Domnitser <http://domnit.org/>'
__version__ = '0.4' |
stepic-0.4.1/stepic.py 0000644 0001750 0001750 00000007602 13226326765 016347 0 ustar kitterma kitterma 0000000 0000000 # stepic - Python image steganography
# Copyright (C) 2007 Lenny Domnitser
# Copyright (C) 2018 Scott Kitterman
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
'''Python image steganography
Stepic hides arbitrary data inside PIL images.
Stepic uses the Python Image Library
(apt: python3-pil, web: ).
'''
__author__ = 'Lenny Domnitser '
__version__ = '0.4.1'
import warnings
try:
from PIL import Image
except:
warnings.warn('Could not find PIL. Only encode_imdata and decode_imdata will work.',
ImportWarning, stacklevel=2)
__all__ = ('encode_imdata','encode_inplace', 'encode',
'decode_imdata', 'decode',
'Steganographer')
def _validate_image(image):
if image.mode not in ('RGB', 'RGBA', 'CMYK'):
raise ValueError('Unsupported pixel format: '
'image must be RGB, RGBA, or CMYK')
if image.format == 'JPEG':
raise ValueError('JPEG format incompatible with steganography')
def encode_imdata(imdata, data):
'''given a sequence of pixels, returns an iterator of pixels with
encoded data'''
datalen = len(data)
if datalen == 0:
raise ValueError('data is empty')
if datalen * 3 > len(imdata):
raise ValueError('data is too large for image')
imdata = iter(imdata)
for i in range(datalen):
pixels = [value & ~1 for value in
imdata.__next__()[:3] + imdata.__next__()[:3] + imdata.__next__()[:3]]
byte = data[i]
for j in range(7, -1, -1):
pixels[j] |= byte & 1
byte >>= 1
if i == datalen - 1:
pixels[-1] |= 1
pixels = tuple(pixels)
yield pixels[0:3]
yield pixels[3:6]
yield pixels[6:9]
def encode_inplace(image, data):
'''hides data in an image'''
_validate_image(image)
w = image.size[0]
(x, y) = (0, 0)
for pixel in encode_imdata(image.getdata(), data):
image.putpixel((x, y), pixel)
if x == w - 1:
x = 0
y += 1
else:
x += 1
def encode(image, data):
'''generates an image with hidden data, starting with an existing
image and arbitrary data'''
image = image.copy()
encode_inplace(image, data)
return image
def decode_imdata(imdata):
'''Given a sequence of pixels, returns an iterator of characters
encoded in the image'''
imdata = iter(imdata)
while True:
pixels = list(imdata.__next__()[:3] + imdata.__next__()[:3] + imdata.__next__()[:3])
byte = 0
for c in range(7):
byte |= pixels[c] & 1
byte <<= 1
byte |= pixels[7] & 1
yield chr(byte)
if pixels[-1] & 1:
break
def decode(image):
'''extracts data from an image'''
_validate_image(image)
return ''.join(decode_imdata(image.getdata()))
class Steganographer:
'deprecated'
def __init__(self, image):
self.image = image
warnings.warn('Steganographer class is deprecated, and will be removed before 1.0',
DeprecationWarning, stacklevel=2)
def encode(self, data):
return encode(self.image, data)
def decode(self):
return decode(self.image)
stepic-0.4.1/stepic 0000755 0001750 0001750 00000006753 13226325140 015713 0 ustar kitterma kitterma 0000000 0000000 #! /usr/bin/python3
# stepic - Python image steganography
# Copyright (C) 2007 Lenny Domnitser
# Copyright (C) 2018 Scott Kitterman
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import optparse
import sys
import traceback
from PIL import Image
import stepic
def encode_files(image_in, data_in, image_out, format):
image = Image.open(image_in)
if not hasattr(data_in, 'read'):
data_in = open(data_in, 'rb')
data = data_in.read()
if format is None and hasattr(image_out, 'write'):
format = image.format
stepic.encode_inplace(image, data)
image.save(image_out, format)
def decode_files(image_in, data_out):
image = Image.open(image_in)
if not hasattr(data_out, 'write'):
data_out = open(data_out, 'wb')
data_out.write(stepic.decode(image))
def main():
parser = optparse.OptionParser(version=stepic.__version__,
description='Hide data in an image, or read hidden data from an image')
parser.add_option('--debug', action='store_true', default=False)
parser.add_option('-d', '--decode', action='store_true', default=False,
help='given an image, write out the hidden data file')
parser.add_option('-e', '--encode', action='store_true', default=False,
help='given an image and data file, write out a new image file with the data hidden in it')
parser.add_option('-f', '--format', metavar='FORMAT',
help='output image format (optional)')
parser.add_option('-i', '--image-in=', dest='image_in', metavar='FILE', default=sys.stdin,
help='read in image FILE for decoding or encoding')
parser.add_option('-t', '--data-in=', dest='data_in', metavar='FILE', default=sys.stdin,
help='read in data FILE for encoding')
parser.add_option('-o', '--out=', dest='out', metavar='FILE', default=sys.stdout,
help='write out to FILE, data when decoding, image when encoding')
options, args = parser.parse_args()
if args:
parser.print_usage()
sys.exit(2)
if options.decode == options.encode:
parser.print_usage()
sys.stderr.write('choose either encode or decode\n')
try:
if options.decode:
decode_files(options.image_in, options.out)
elif options.encode:
encode_files(options.image_in, options.data_in, options.out, options.format)
except (TypeError, ValueError) as e:
message = 'error: ' + str(e) + '\n'
sys.stderr.write(message)
sys.exit(1)
except KeyboardInterrupt:
pass
except Exception as e:
message = e.__class__.__name__ + ': ' + str(e) + '\n'
sys.stderr.write(message)
if options.debug:
traceback.print_tb(sys.exc_traceback)
sys.exit(3)
if __name__ == '__main__':
main()
stepic-0.4.1/MANIFEST.in 0000664 0001750 0001750 00000000153 13226322632 016225 0 ustar kitterma kitterma 0000000 0000000 include COPYING
include TODO
include stepic.1
include MANIFEST.in
include Makefile
recursive-include doc *
stepic-0.4.1/COPYING 0000664 0001750 0001750 00000043103 13224241340 015516 0 ustar kitterma kitterma 0000000 0000000 GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
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, 1 April 1989
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stepic-0.4.1/stepic.1 0000664 0001750 0001750 00000002042 13224327741 016043 0 ustar kitterma kitterma 0000000 0000000 .\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.44.1.
.TH STEPIC "1" "January 2018" "stepic 0.4" "User Commands"
.SH NAME
stepic \- Python image steganography
.SH SYNOPSIS
.B stepic
[\fIoptions\fR]
.SH DESCRIPTION
Hide data in an image, or read hidden data from an image
.SH OPTIONS
.TP
\fB\-\-version\fR
show program's version number and exit
.TP
\fB\-h\fR, \fB\-\-help\fR
show this help message and exit
.HP
\fB\-\-debug\fR
.TP
\fB\-d\fR, \fB\-\-decode\fR
given an image, write out the hidden data file
.TP
\fB\-e\fR, \fB\-\-encode\fR
given an image and data file, write out a new image
file with the data hidden in it
.TP
\fB\-f\fR FORMAT, \fB\-\-format\fR=\fIFORMAT\fR
output image format (optional)
.TP
\fB\-i\fR FILE, \fB\-\-image\-in\fR=\fI=FILE\fR
read in image FILE for decoding or encoding
.TP
\fB\-t\fR FILE, \fB\-\-data\-in\fR=\fI=FILE\fR
read in data FILE for encoding
.TP
\fB\-o\fR FILE, \fB\-\-out\fR=\fI=FILE\fR
write out to FILE, data when decoding, image when
encoding
.SH AUTHOR
Written by Lenny Domnitser stepic-0.4.1/PKG-INFO 0000664 0001750 0001750 00000001026 13226327214 015565 0 ustar kitterma kitterma 0000000 0000000 Metadata-Version: 1.1
Name: stepic
Version: 0.4.1
Summary: Python image steganography
Home-page: https://launchpad.net/stepic
Author: Scott Kitterman
Author-email: scott@kitterman.com
License: GPL
Description: UNKNOWN
Platform: UNKNOWN
Classifier: License :: OSI Approved :: GNU General Public License v2 or later (GPLv2+)
Classifier: Environment :: Console
Classifier: Topic :: Multimedia :: Graphics
Classifier: Topic :: Utilities
Classifier: Development Status :: 6 - Mature
Classifier: Programming Language :: Python :: 3 :: Only
stepic-0.4.1/TODO 0000664 0001750 0001750 00000000156 13224241340 015154 0 ustar kitterma kitterma 0000000 0000000 * Make py2exe version
* Package .exe installer
* Write unit tests
* Make icon/logo
* Write more documentation
stepic-0.4.1/Makefile 0000664 0001750 0001750 00000001134 13224327553 016134 0 ustar kitterma kitterma 0000000 0000000 all: documentation nightly clean
nightly:
RELEASE=0 ./setup.py sdist --formats=gztar
release:
RELEASE=1 ./setup.py sdist --formats=gztar
documentation: doc/help.txt doc/pydoc/stepic.html stepic.1
doc/help.txt: stepic
./stepic --help > doc/help.txt
doc/pydoc/stepic.html: stepic.py
pydoc -w stepic
mkdir -p doc/pydoc/
mv stepic.html doc/pydoc/
stepic.1: stepic stepic.help2man_include
help2man --include=stepic.help2man_include --output=stepic.1 ./stepic
clean:
./setup.py clean
-rm -rf build MANIFEST
-find -name "*.py[co]" -print0 | xargs -0 rm
.PHONY: all release documentation clean